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汽車冷卻系統檢修要注意什么?

來源:http://www.pxhecheng.com發布時間:2021-12-13 18:31:56

汽車的冷卻系統中較常見的故障是水箱開鍋,使汽車拋錨,虧水,加速無力等檢修水箱開鍋故障的車輛之前,要確保車輛的其他相關部件工作正常,比如:正確標號的燃油、機油、火花塞、防凍液,調好點火正時及怠速空燃比。在這些方面都正常的情況下,方才能進行下一步的檢修。
The more common fault in the vehicle cooling system is the boiling of the water tank, which makes the vehicle break down, lose water and unable to accelerate. Before overhauling the vehicle with the boiling of the water tank, ensure that other relevant parts of the vehicle work normally, such as correctly labeled fuel, oil, spark plug and antifreeze, and adjust the ignition timing and idle air-fuel ratio. When these aspects are normal, the next maintenance can be carried out.
檢修要有順序:
Maintenance sequence:
一、先看水箱。
1、 Look at the water tank first.
正常水箱在汽車行駛時應該上下溫度一致,如果出現半邊涼半邊熱的情況,就可以判斷水箱內部堵塞??梢园阉浣釉?公斤壓力的水管上,逆向沖洗,如果堵塞嚴重可以使用少量清洗劑,同時注意清洗水箱的污垢并觀察有無滲漏。
The temperature of the normal water tank should be the same up and down when the car is driving. If the water tank is cold and hot, it can be judged that the inside of the water tank is blocked. The water tank can be connected to a 2kg pressure water pipe for reverse flushing. If the blockage is serious, a small amount of cleaning agent can be used. At the same time, pay attention to cleaning the dirt of the water tank and observe whether there is leakage.
二、再看節溫器。
2、 Look at the thermostat.
摘除節溫器就可以防止水溫偏高?其實節溫器只要正常發揮作用并不會導致水溫過高,而發動機長時間在低溫下運行也是非常有害的;另外許多發動機的節溫器是雙向作用的,當節溫器關閉時,強迫冷卻水走小循環,而節溫器打開時,小循環關閉,冷卻水全部走大循環。如果不裝節溫器,由于管路局部阻力的節流作用,實際流向大循環是水很少,水溫反而升高。

濟南奧迪汽車保養
Removing the thermostat can prevent the water temperature from being too high? In fact, as long as the thermostat works normally, the water temperature will not be too high, and it is very harmful for the engine to run at low temperature for a long time; In addition, the thermostat of many engines acts in both directions. When the thermostat is closed, the cooling water is forced to go through a small cycle, while when the thermostat is opened, the small cycle is closed and the cooling water all goes through a large cycle. If the thermostat is not installed, due to the throttling effect of local resistance of the pipeline, the actual flow direction is large, and there is little circulating water, but the water temperature rises.
三、再檢查水泵。
3、 Check the water pump again.
)滲漏、丟轉和葉輪腐蝕。所謂丟轉是水泵軸和葉輪配合間隙太大,當發動機轉速達到一定時,水泵葉輪無法達到相應轉速,造成水循環不良。
)Leakage, loss of rotation and impeller corrosion. The so-called loss of rotation is that the matching clearance between the water pump shaft and the impeller is too large. When the engine speed reaches a certain speed, the water pump impeller cannot reach the corresponding speed, resulting in poor water circulation.
)風扇是冷卻系的主要部件,有些轎車已淘汰了固定風扇,而代之以電磁和帶有硅油離合器的風扇。它的特點是冷車時風扇基本不起作用,而熱車時散熱量達到較大;硅油風扇離合器的主要故障是漏油,而電磁風扇離合器的主要故障是水溫開關損壞、線路損壞、電磁線圈損壞。
)The fan is the main component of the cooling system. Some cars have eliminated the fixed fan and replaced it with electromagnetic fan and fan with silicone oil clutch. Its characteristic is that the fan basically does not work when the car is cold, but the heat dissipation is large when the car is hot; The main fault of silicone oil fan clutch is oil leakage, while the main fault of electromagnetic fan clutch is water temperature switch damage, circuit damage and solenoid coil damage.
3)發動機的散熱除了以水為散熱介質外,一部分熱還可以隨排氣散失,機油也可以帶走部分熱量,而發動機周圍的空氣對流更起著不可替代的作用,因此檢查發動機過熱時不要忘記檢查排氣系統(尤其是帶催化轉化器的車型)是否流暢,機油、變速箱油散熱裝置是否完好。另外發動機風扇附近的風圈對機艙內的熱對流起著至關重要的作用,檢查時應注意。
3) In addition to using water as the heat dissipation medium, part of the heat can also be lost with the exhaust, and the oil can also take away part of the heat, and the air convection around the engine plays an irreplaceable role, Therefore, when checking the engine for overheating, don't forget to check whether the exhaust system (especially the model with catalytic converter) is smooth and whether the oil and transmission oil heat sink are intact. In addition, the air ring near the engine fan plays a vital role in the heat convection in the engine compartment, so pay attention to it during inspection.
以上的精彩內容來自:濟南路通悅寶汽車服務有限公司濟南奧迪汽車保養的介紹及分享,更多內容請繼續關注我們:http://www.pxhecheng.com
The above wonderful content comes from the introduction and sharing of Jinan Audi automobile maintenance by Jinan road tongyuebao Automobile Service Co., Ltd. please continue to pay attention to us for more content: http://www.pxhecheng.com

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